Gas-check for bunsen burners.



No. 729,243; PATENTED' MAY 26, 1903...

' A. A. URY.

GAS CHECK FOR BUNSEN BURNBRS.

APPLICATION FILED AUG. 6. 1902. 110 IODBL.

UN iTED STATES Patented May 26, 1903.

PATENT OFFICE.

ALFRED A. URY, OF NEW YORK, N. Y.

SPECIFICATION forming part of Letters Patent N 0. 729,243, dated May 26, 1903. Application filed August 6,1902. Serial No. 118,587- (No model.)

To all whom, it may concern:

Be it known that I, ALFRED A. URY, a citizen of the United States, and a resident of the city of New York, borough of Manhattan,

State of New York, have invented certain new and useful Improvements in Gas-Checks for Bunsen Burners, of which the following is a specification.

My invention relates to gas-checks employed in connection with incandescent gaslamps of the lVclsbach type, wherein a Bunsen burner is used; and my invention resides in a novel construction of check for such a burner, substantially as herein shown and described, and further pointed out in the claims.

In the drawings forming part of this specification, Figure 1 is a side elevation of my improved gas-check combined with a portion of a suitable burner-tube. Figs. 2 and 3 are respectively central sectional elevations of Fig. 1, showing the check closed, Fig. 2, and open, Fig. 3. Fig. 1 is a plan and section on the line a 4, Fig. 1. Figs. 5 and G are plans and sections substantially on the line 5 5, Fig. 2, showing the check open, as in Fig. 5, and closed, as in Fig. 6. Fig. 7 is a plan of the supportingnipple, with the spring, gate, and

posts removed; and Figs. 8 and 9 are respectively plan views of the spring and gate.

Similar numerals indicate corresponding parts throughout the several views.

I have illustrated my invention in connection with a burner tube 1 of desired construction, having air-inlets 2 but any form of tube may be employed.

At 3 is a nipple adjusted by means of the internal screw-thread a to be secured to any suitable gas-fixture, and an exterior thread 5 enables the tube 1 to be expeditiously and se-' curely affixed thereto. The nipple has a crown 6, which is unperforated except for the emission-port 7, preferably placed centrally, and the post-holes 8, which latter, however, need not pass through the crown. The top surface of the crown 6 is carefully planed to form a sufficiently tight fit for the gate-valve.

At 9 is the valve consisting of a short bar of metal, preferably brass, (as is the nipple 3,) having an emission aperture or port 10, preferably centrally located, and two longitudinally-extending slots 11 12, the slot 12 being located nearer the port 10 than the slot 11. This relative portion may be reversed.

At 13 is the seating-spring, which is preferably segmentally disposed, as shown, (or otherwise downwardly deflected,) to enable it to exert a central pressure on the valve 9 when the parts are assembled. This spring is provided with an emission-port 14 and post-holes 15.

The ports 10, 14, and '7 are of exactly the same size, so that when they register, as shown in Fig. 3, they form a smooth bore of uniform cross section, so that when in use gas will pass through in a uniform stream without a perceptible reduction in its velocity andwith no deflection or distortion, thus enabling it to draw air through the inlets 2 with maximum effect.

The parts are assembled as indicated in Figs. 2 and 3. The valve 9 is laid on the face of the crown and the spring 13 superposed upon the valve. Posts having threaded stems 16 and heads 17 are passed through the hole 15 in the spring, slots 11 12 in the valve, and into the holes 8, the emission-ports 7 in the crown and 14 in the spring being thus brought into vertical alinement. By screwing down on the posts, bringing the heads 17 to bear on the spring 13 at each side of the port 14, the spring is partly flattened out and caused to bear with a gentle pressure sufficient to give the valve 9 a good and gas-tight bearing on the seat on the crown, yet permit of the easy sliding of the valve, and this pressure can be adjusted at pleasure. By sliding the valve in one direction-say to the right-the port 10 is brought in alinement with the ports 7 and 14, the ends of the slots 11 12 bringing up against the post-stems and limiting the throw of the valve; and reversely the port 10 in the valve is disalined by the post-stems limiting its movement in the latter direction. In this Way the emission of gas from the bore 17 of the nipple through the check can be regulated at pleasure and the volume of gas passing through the ports controlled within the limits of the port-openings. The parts being confined within a comparatively small field vertically (from the bottom of the crown to the top of the spring) and the location of the various ports at the top of the enlarged bore prevents the accumulation of sediment and allows the gas to readily escape in a thin stream, centrally disposed and kept under restraint in its passage from the bore 18 to the tube 1, but a very short space of time.

For convenience the crown or valve seat is located in alinement with the air-openings 2 in-the tube, so that the ends of the valve can be readily reached.

Having described my invention, I claim- 1. In a gas-check, the combination with a suitable base adapted to be secured to a gasfixture and having an internal bore, of a horizontal valve-seat formed on the base, a flat valve slidable on the seat, ports formed in the seat and valve, a spring bearing centrally on the valve, and means for limiting the slide of the valve to positively register the parts.

2. In a gas-check the combination with the nipple having a crown providing avalve-seat, an aperture therein, a flat valve having an aperture and slidable on the seat, an apertured spring bearing downwardly on the valve over the aperture in the crown, and means for limiting the throw of the valve.

3. In a gas-check the combination with the nipple having a horizontal and apertured crown, ofthe fiat and apertured valve, slots formed in the valve at each side of the aperture, a plate-spring having an aperture placed on the valve, and ports passing through the spring and valve into the crown.

4c. In a gas-check the combination with a nipple having a horizontal and apertured crown forming a valve-seat, a fiat and apertured valve slidable on the seat, a normally curved fiat spring having an aperture, and means for securing the spring down on the valve and to the nipple, located at each side of its aperture.

5. In a gas-check the combination with the nipple 3 having the apertured crown 6, of the flat valve 9 having the aperture 10 and slidable on the crown the downwardly-curved plate-spring 13 having the aperture 14, and means for securing the spring and nipple together.

6. In a gas-check, the combination with the nipple 3 having the crown 6, the aperture 7 in the crown, the flat valve 9 having the aperture 10, and longitudinal slots at each side of the said aperture 10, the plate-spring 13 havin g the aperture 14, and posts passing through the spring, the valve-slots, and into the crown.

7. In a gas-check, the combination with the nipple 3 having the crown b, the aperture 7 in the crown, the fiat valve!) having the aperture 10 and longitudinal slots 11 and 12 located at each side of the said aperture lO and one nearer it than the other, the plate-spring 13 having the aperture 14 and posts passing through the spring, the valve-slots and into the crown.

8. In a gas-check or similar article, a nipple, a spring, and a valve placed therebetween, each of the said parts being provided with a port of the same size, which ports are adapted to register, forming a uniform bore.

Signed at the city of New York, borough of Manhattan, and State of New York, this 4th day of August, 1902.

ALFRED A. "URY.

lVitnesses:

OHAs. G. HENsLEY, ERNEST J. WEBER. 

